package com.atguigu.gulimall.product.service.impl;

import com.atguigu.common.constant.ProductConstant;
import com.atguigu.gulimall.product.dao.AttrAttrgroupRelationDao;
import com.atguigu.gulimall.product.dao.AttrGroupDao;
import com.atguigu.gulimall.product.dao.CategoryDao;
import com.atguigu.gulimall.product.entity.AttrAttrgroupRelationEntity;
import com.atguigu.gulimall.product.entity.AttrGroupEntity;
import com.atguigu.gulimall.product.entity.CategoryEntity;
import com.atguigu.gulimall.product.service.CategoryService;
import com.atguigu.gulimall.product.vo.AttrGroupReleationVo;
import com.atguigu.gulimall.product.vo.AttrResponseVo;
import com.atguigu.gulimall.product.vo.AttrVo;
import com.baomidou.mybatisplus.core.conditions.update.UpdateWrapper;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.Arrays;
import java.util.Collection;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.atguigu.common.utils.PageUtils;
import com.atguigu.common.utils.Query;

import com.atguigu.gulimall.product.dao.AttrDao;
import com.atguigu.gulimall.product.entity.AttrEntity;
import com.atguigu.gulimall.product.service.AttrService;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.util.StringUtils;


@Service("attrService")
public class AttrServiceImpl extends ServiceImpl<AttrDao, AttrEntity> implements AttrService {

    @Autowired
    AttrAttrgroupRelationDao relationDao;
    @Autowired
    AttrGroupDao attrGroupDao;
    @Autowired
    CategoryDao categoryDao;
    @Autowired
    CategoryService categoryService;

    @Override
    public PageUtils queryPage(Map<String, Object> params) {
        IPage<AttrEntity> page = this.page(
                new Query<AttrEntity>().getPage(params),
                new QueryWrapper<AttrEntity>()
        );

        return new PageUtils(page);
    }

    @Transactional
    @Override
    public void saveAttr(AttrVo attrVo) {
        //
        AttrEntity attrEntity = new AttrEntity();
        BeanUtils.copyProperties(attrVo, attrEntity);
        //1.保存基本数据
        this.save(attrEntity);
        //2.保存关联关系
        if (attrVo.getAttrType() == ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode() && attrVo.getAttrGroupId()!=null) {
            AttrAttrgroupRelationEntity relationEntity = new AttrAttrgroupRelationEntity();
            relationEntity.setAttrGroupId(attrVo.getAttrGroupId());
            relationEntity.setAttrId(attrEntity.getAttrId());
            relationDao.insert(relationEntity);

        }


    }

    @Override
    public PageUtils queryBaseAttrPage(Map<String, Object> params, Long catelogId, String type) {

        QueryWrapper<AttrEntity> queryWrapper = new QueryWrapper<AttrEntity>().eq("attr_type", "base".equalsIgnoreCase(type) ?
                ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode() : ProductConstant.AttrEnum.ATTR_TYPE_SALE.getCode());

        if (catelogId != 0) {
            queryWrapper.eq("catelog_id", catelogId);
        }
        String key = (String) params.get("key");
        if (!StringUtils.isEmpty(key)) {
            // attr_id attr_name
            queryWrapper.and((wrapper) -> {
                wrapper.eq("attr_id", key).or().like("attr_name", key);
            });
        }

        IPage<AttrEntity> page = this.page(
                new Query<AttrEntity>().getPage(params),
                queryWrapper
        );
        PageUtils pageUtils = new PageUtils(page);

        List<AttrEntity> records = page.getRecords();
        List<AttrResponseVo> responseVoList = records.stream().map((attrEntity) -> {
            AttrResponseVo responseVo = new AttrResponseVo();
            BeanUtils.copyProperties(attrEntity, responseVo);
            //设置分类和分组的名字   只有基本属性才有分类和分组的名字
            if ("base".equalsIgnoreCase(type)) {
                AttrAttrgroupRelationEntity attrId = relationDao.selectOne(new QueryWrapper<AttrAttrgroupRelationEntity>().eq("attr_id", attrEntity.getAttrId()));
                if (attrId != null && attrId.getAttrGroupId()!=null) {
                    AttrGroupEntity attrGroupEntity = attrGroupDao.selectById(attrId.getAttrGroupId());
                    responseVo.setGroupName(attrGroupEntity.getAttrGroupName());
                }
            }

            CategoryEntity categoryEntity = categoryDao.selectById(attrEntity.getCatelogId());
            if (categoryEntity != null) {
                responseVo.setCatelogName(categoryEntity.getName());
            }
            return responseVo;
        }).collect(Collectors.toList());
        pageUtils.setList(responseVoList);
        return pageUtils;
    }

    @Override
    public AttrResponseVo getAttrInfo(Long attrId) {
        AttrResponseVo responseVo = new AttrResponseVo();
        AttrEntity attrEntity = this.getById(attrId);

        BeanUtils.copyProperties(attrEntity, responseVo);

        //TODO  好像是基本属性才有分组信息？
        if (attrEntity.getAttrType() == ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode()) {
            //1.设置分组信息    先得到属性的  属性和分组中间表  再通过中间表的到分组表
            AttrAttrgroupRelationEntity attrgroupRelationEntity = relationDao.selectOne(new QueryWrapper<AttrAttrgroupRelationEntity>().eq("attr_id", responseVo.getAttrId()));

            if (attrgroupRelationEntity != null) {
                responseVo.setAttrGroupId(attrgroupRelationEntity.getAttrGroupId());

                AttrGroupEntity attrGroupEntity = attrGroupDao.selectById(attrgroupRelationEntity.getAttrGroupId());
                if (attrGroupEntity != null) {
                    responseVo.setGroupName(attrGroupEntity.getAttrGroupName());
                }

            }
        }

        //2.设置分类信息
        Long catelogId = attrEntity.getCatelogId();
        Long[] catelogPath = categoryService.findCatelogPath(catelogId);   //回显路劲
        responseVo.setCatelogPath(catelogPath);

        CategoryEntity categoryEntity = categoryDao.selectById(catelogId);
        if (categoryEntity != null) {
            responseVo.setCatelogName(categoryEntity.getName());
        }


        return responseVo;
    }

    @Transactional
    @Override
    public void updateAttr(AttrVo attrVo) {
        AttrEntity attrEntity = new AttrEntity();
        BeanUtils.copyProperties(attrVo, attrEntity);

        this.updateById(attrEntity);
        if (attrEntity.getAttrType() == ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode()) {
            //1.修改分组关联
            AttrAttrgroupRelationEntity attrgroupRelationEntity = new AttrAttrgroupRelationEntity();
            attrgroupRelationEntity.setAttrId(attrVo.getAttrId());
            attrgroupRelationEntity.setAttrGroupId(attrVo.getAttrGroupId());

            Integer count = relationDao.selectCount(new QueryWrapper<AttrAttrgroupRelationEntity>().eq("attr_id", attrVo.getAttrId()));
            if (count > 0) {
                relationDao.update(attrgroupRelationEntity, new UpdateWrapper<AttrAttrgroupRelationEntity>().eq("attr_id", attrVo.getAttrId()));

            } else {
                //新增分组
                relationDao.insert(attrgroupRelationEntity);
            }
        }

    }

    /**
     * 根据分组id查找关联的所有基本（规格参数）属性
     *
     * @param attrgroupId
     * @return
     */
    @Override
    public List<AttrEntity> getRelationAttr(Long attrgroupId) {
        //先去关联中间表查询
        List<AttrAttrgroupRelationEntity> entities = relationDao.selectList(new QueryWrapper<AttrAttrgroupRelationEntity>().eq("attr_group_id", attrgroupId));
        List<Long> attrIds = entities.stream().map((attr) -> {
            return attr.getAttrId();
        }).collect(Collectors.toList());

        if (attrIds == null || attrIds.size() == 0) {
            return null;
        }
        Collection<AttrEntity> attrEntities = this.listByIds(attrIds);
        return (List<AttrEntity>) attrEntities;
    }

    @Override
    public void deleteRelation(AttrGroupReleationVo[] vos) {
//        relationDao.delete(new QueryWrapper<>().eq("attr_id",1L).eq("attr_group_id",1L));
        //批量删除
        List<AttrAttrgroupRelationEntity> entities = Arrays.asList(vos).stream().map((item) -> {
            AttrAttrgroupRelationEntity relationEntity = new AttrAttrgroupRelationEntity();
            BeanUtils.copyProperties(item, relationEntity);
            return relationEntity;
        }).collect(Collectors.toList());
        relationDao.deleteBatchRelation(entities);
    }

    /**
     * 获取当前分组没有关联的所有属性
     *
     * @param params
     * @param attrgroupId
     * @return
     */
    @Override
    public PageUtils getNoRelationAttr(Map<String, Object> params, Long attrgroupId) {
        //1. 当前分组只能关联自己所属分类里面的所有属性
        AttrGroupEntity attrGroupEntity = attrGroupDao.selectById(attrgroupId);
        Long catelogId = attrGroupEntity.getCatelogId();
        //2. 当前分组只能关联别的分组没有引用的属性
        List<AttrGroupEntity> groupEntities = attrGroupDao.selectList(new QueryWrapper<AttrGroupEntity>().eq("catelog_id", catelogId));

        //2.1) 当前分类下的其他分组
        List<Long> collect = groupEntities.stream().map(item -> {
            return item.getAttrGroupId();
        }).collect(Collectors.toList());
        //2.2) 这些分组关联的属性
        List<AttrAttrgroupRelationEntity> groupId = relationDao.selectList(new QueryWrapper<AttrAttrgroupRelationEntity>().in("attr_group_id", collect));
        List<Long> attrIds = groupId.stream().map(item -> {
            return item.getAttrId();
        }).collect(Collectors.toList());
        //2.3) 从当前分类的所有属性中移除这些属性
        QueryWrapper<AttrEntity> queryWrapper = new QueryWrapper<AttrEntity>().eq("catelog_id", catelogId).eq("attr_type",ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode());
        if (attrIds!=null && attrIds.size()>0){
            queryWrapper.notIn("attr_id", attrIds);
        }
        String key = (String) params.get("key");
        if (!StringUtils.isEmpty(key)) {
            queryWrapper.and((w) -> {
                w.eq("attr_id", key).or().like("attr_name", key);
            });
        }
        IPage<AttrEntity> page = this.page(new Query<AttrEntity>().getPage(params), queryWrapper);
        PageUtils pageUtils = new PageUtils(page);


        return pageUtils;
    }

    /**
     * 在指定的所有属性集合里面，调出检索属性
     * @param attrIds
     * @return
     */
    @Override
    public List<Long> selectSearchAttrIds(List<Long> attrIds) {
        return baseMapper.selectSearchAttrIds(attrIds);
    }

}